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    • 87. 发明申请
    • OVERMOLDED HIGH STRENGTH POLYMER-BASED CARTRIDGE CASING FOR BLANK AND SUBSONIC AMMUNITION
    • 基于超高分子聚合物的空心纸和子午线弹药盒
    • US20150241183A1
    • 2015-08-27
    • US13828311
    • 2013-03-14
    • PCP TACTICAL, LLC
    • Charles PadgettRobert Lanse Padgett
    • F42B5/30F42B5/02
    • F42B5/025F42B5/313F42B8/04
    • A high strength polymer-based cartridge casing for blank or subsonic ammunition has a reduced volume and includes a mouth, a neck extending away from the mouth, and a shoulder extending below the neck. Additionally, the cartridge includes an extraction rim and a groove, a primer pocket and a flash hole in fluid communication with the reduced volume. An inner wall encloses the reduced volume. The mouth has a first diameter and the inner wall has a second diameter and the second diameter is approximately equal to the first diameter. Further, the neck, shoulder, rim, groove, and inner wall all comprise a polymer. Further, the inner wall can be a metallic sleeve overmolded by a polymer sheath. The reduced volume of the propellant chamber permits only enough propellant to propel a bullet engaged in the cartridge casing at subsonic speeds.
    • 用于空白或亚音速弹药的高强度聚合物型药筒外壳具有减小的体积,并且包括口,从嘴部延伸的颈部和在颈部下方延伸的肩部。 此外,盒包括提取边缘和凹槽,底漆袋和与减小的体积流体连通的闪光孔。 内壁包围减小的体积。 口具有第一直径,内壁具有第二直径,第二直径近似等于第一直径。 此外,颈部,肩部,边缘,凹槽和内壁均包括聚合物。 此外,内壁可以是由聚合物护套包覆模制的金属套筒。 推进剂室的体积减小仅允许足够的推进剂以亚音速推动接合在筒壳体中的子弹。
    • 90. 发明授权
    • Three component bullet with core retention feature and method of manufacturing the bullet
    • 具有核心保留特征的三部件子弹和制造子弹的方法
    • US08752484B2
    • 2014-06-17
    • US13190972
    • 2011-07-26
    • Thomas J. Burczynski
    • Thomas J. Burczynski
    • F42B14/02F42B12/78F42B30/02F42B33/00
    • F42B12/78B21K1/025B21K25/00F42B5/02F42B5/025F42B5/067F42B12/02F42B12/74F42B14/02F42B30/02F42B33/00
    • A three component bullet with an improved core retention feature and a method of manufacturing the bullet is described including a cylindrical jacket having an open end and a closed end containing a malleable metal core which is forced into a forming die having a bottleneck shaped interior resulting in a bottleneck shaped pre-form wherein the outside diameter of the open-ended forward portion of the jacket is smaller than the outside diameter of its closed rearward portion. The open end of the pre-form may be dropped through or forced through a malleable locking band of appropriate height, diameter and wall thickness. A relatively tight-fitting punch enters the open end of the pre-form generating sufficient axial force against the face of the metal core to radially swell the core and subsequently portions of the jacket fore and aft of the locking band, thereby securing the locking band in place while at the same time producing an inwardly-extending annular band of jacket material which embeds itself into the core material with the result that the core is permanently locked inside the jacket.
    • 描述了具有改进的芯保持特征的三组件子弹和制造子弹的方法,其包括具有开口端和封闭端的圆柱形护套,其包含可延展的金属芯,该可延展的金属芯被迫进入具有瓶颈形状的内部的成形模具, 瓶颈形状的预制件,其中外套的开口前部的外径小于其闭合的后部的外径。 预成型件的开口端可以通过或强制通过适当的高度,直径和壁厚的可延展的锁定带。 相对紧密的冲头进入预成型件的开口端,产生抵抗金属芯的表面的足够的轴向力,以使芯部和随后的锁定带的前后部分夹紧,从而固定锁定带 同时产生向内延伸的护套材料的环形带,其将自身嵌入芯材料中,结果是将芯永久地锁定在护套内。